Influence of the Velocity Near the Spark Plug on Early Flame Development
(1993) SAE International Congress and Exposition- Abstract
- The objective of this paper is to investigate how the
velocity and turbulence within different locations close to
the spark plug influence the combustion at individual
cycles in a SI-engine.
2-D cycle-resolved laser doppler velocimetry
(LDV) measurements have been done both inside the spark
gap and around the spark tip to extract velocity
information. The pressure in the cylinder was measured
with a piezo-electric transducer connected to an A/D-card
in a standard PC.
The velocity information was filtered to get "mean
velocity" and "turbulence". The pressure signal was used
in a one-zone heatrelease model to get different levels... (More) - The objective of this paper is to investigate how the
velocity and turbulence within different locations close to
the spark plug influence the combustion at individual
cycles in a SI-engine.
2-D cycle-resolved laser doppler velocimetry
(LDV) measurements have been done both inside the spark
gap and around the spark tip to extract velocity
information. The pressure in the cylinder was measured
with a piezo-electric transducer connected to an A/D-card
in a standard PC.
The velocity information was filtered to get "mean
velocity" and "turbulence". The pressure signal was used
in a one-zone heatrelease model to get different levels of
mass fraction burned etc.
The results show a significant influence of both the
"mean velocity" and the "turbulence" on the early part of
the combustion when the velocity was measured close to
the spark plug tip. The influence was less significant when
the velocity was measured at some distance from the
electrodes for both a pancake and a high squish
combustion chamber. The correlation between the velocity
close to the spark plug and the early flame development
showed no dependence on the air-fuel ratio and a modest
dependence on ignition timing. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/574799
- author
- Johansson, Bengt LU
- organization
- publishing date
- 1993
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- cycle-cycle variation, combustion engine, LDV, velocity measurement
- host publication
- SAE Technical Paper Series
- publisher
- Society of Automotive Engineers
- conference name
- SAE International Congress and Exposition
- conference dates
- 0001-01-02
- external identifiers
-
- scopus:85072438797
- ISSN
- 0148-7191
- language
- English
- LU publication?
- yes
- id
- f08eb7cf-966e-45d3-ac77-18fb527a518d (old id 574799)
- date added to LUP
- 2016-04-01 15:53:22
- date last changed
- 2021-01-03 05:58:09
@inproceedings{f08eb7cf-966e-45d3-ac77-18fb527a518d,
abstract = {{The objective of this paper is to investigate how the<br/><br>
velocity and turbulence within different locations close to<br/><br>
the spark plug influence the combustion at individual<br/><br>
cycles in a SI-engine.<br/><br>
2-D cycle-resolved laser doppler velocimetry<br/><br>
(LDV) measurements have been done both inside the spark<br/><br>
gap and around the spark tip to extract velocity<br/><br>
information. The pressure in the cylinder was measured<br/><br>
with a piezo-electric transducer connected to an A/D-card<br/><br>
in a standard PC.<br/><br>
The velocity information was filtered to get "mean<br/><br>
velocity" and "turbulence". The pressure signal was used<br/><br>
in a one-zone heatrelease model to get different levels of<br/><br>
mass fraction burned etc.<br/><br>
The results show a significant influence of both the<br/><br>
"mean velocity" and the "turbulence" on the early part of<br/><br>
the combustion when the velocity was measured close to<br/><br>
the spark plug tip. The influence was less significant when<br/><br>
the velocity was measured at some distance from the<br/><br>
electrodes for both a pancake and a high squish<br/><br>
combustion chamber. The correlation between the velocity<br/><br>
close to the spark plug and the early flame development<br/><br>
showed no dependence on the air-fuel ratio and a modest<br/><br>
dependence on ignition timing.}},
author = {{Johansson, Bengt}},
booktitle = {{SAE Technical Paper Series}},
issn = {{0148-7191}},
keywords = {{cycle-cycle variation; combustion engine; LDV; velocity measurement}},
language = {{eng}},
publisher = {{Society of Automotive Engineers}},
title = {{Influence of the Velocity Near the Spark Plug on Early Flame Development}},
url = {{https://lup.lub.lu.se/search/files/4503833/574856.pdf}},
year = {{1993}},
}